An Optomechanical Platform for Quantum Hypothesis Testing for Collapse Models

TL;DR

This paper demonstrates how optomechanical systems can be used for quantum hypothesis testing to distinguish collapse models of the wavefunction, leveraging quantum resources like squeezed light for enhanced sensitivity.

Contribution

It introduces a novel optomechanical platform utilizing quantum channel discrimination with squeezed light for fundamental physics tests.

Findings

Quantum channel discrimination outperforms classical schemes.

Feasible measurement schemes enable practical implementation.

Potential to test spontaneous collapse models of wavefunction.

Abstract

Quantum Hypothesis Testing has shown the advantages that quantum resources can offer in the discrimination of competing hypothesis. Here, we apply this framework to optomechanical systems and fundamental physics questions. In particular, we focus on an optomechanical system composed of two cavities employed to perform quantum channel discrimination. We show that input squeezed optical noise, and feasible measurement schemes on the output cavity modes, allow to obtain an advantage with respect to any comparable classical schemes. We apply these results to the discrimination of models of spontaneous collapse of the wavefunction, highlighting the possibilities offered by this scheme for fundamental physics searches.